Electron-boson coupling is crucial for understanding many-body systems, yet the role of electron-plasmon interactions remains underexplored. Here, the authors reveal plasmonic polarons in self-intercalated 1T-TiS₂ using angle-resolved photoemission spectroscopy and high-resolution electron energy loss spectroscopy, demonstrating tunable bosonic energy scales and highlighting the potential of layered materials for advancing quantum material research.
- Byoung Ki Choi
- Woojin Choi
- Jinwoong Hwang
